I wrote a script which lists the content of a given directory.
I have just one problem. If you give 2 or more parameters, then it gives a strange error. After that error, it gives also an error from my script, but normally it shouldn't give that error.
Here's my script.You can test it.
Code:
#!/bin/bash
EDITOR=vim
PASSWD=/etc/passwd
RED='\033[0;41;30m'
STD='\033[0;0;39m'
pause(){
read -p "Press [Enter] key to continue..." fackEnterKey
}
one(){
echo "Give in a directory name:"
read name
if [ ! $# -gt 0 ]; then
if [ -d $name ]; then
echo "Ok. Here's the content of the given directory:"
echo
ls -l -- $name
exit 0
else
echo "Directory name doesn't exist or isn't a directory."
exit 1
fi
else
echo "No or more than one param."
exit 2
fi
pause
}
show_menus() {
clear
echo "~~~~~~~~~~~~~~~~~~~~~"
echo " MAIN - MENU "
echo "~~~~~~~~~~~~~~~~~~~~~"
echo "1. List content of a directory by given param"
echo "2. Exit"
}
# read input from the keyboard and take a action
# invoke the one() when the user select 1 from the menu option.
# Exit when user the user select 2 form the menu option.
read_options(){
local choice
read -p "Enter choice [ 1 - 2] " choice
case $choice in
1) one ;;
2) exit 0;;
*) echo -e "${RED}Error...${STD}" && sleep 1
esac
}
# ----------------------------------------------
# Ignore CTRL+C, CTRL+Z and quit singles
# ----------------------------------------------
trap '' SIGINT SIGQUIT SIGTSTP
# -----------------------------------
# List menu while true
# ------------------------------------
while true
do
clear
show_menus
read_options
done
Dear All,
I got a table creation file in a standard format. I need to accept parameters from the user & then based on the input change the data in the file. For. eg. i will accept the database name, dbspace name & user name from the user and accordingly change the same in the table creation... (2 Replies)
I have a script which take 3 input parameters
1st - a date (i.e. current date)
2nd - type (i.e. A)
3rd - limit (i.e. 40)
normally the date parameter would be current date, so I thought I could do this
calculate.sh $(date +%Y-%m-%d) A 40
however, it seems like it can't be done,... (3 Replies)
Hi i am a newbie who is trying to input parameters into this script, but not sure where to start.
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Environment: Windows XP
Running script: Cygwin 3.2
... (2 Replies)
Hi All,
I have tried to use ckdate (sun) command in script. It checks the input parameter which should be in 'YYYYMMDD format.
date=$( echo $1 | ckdate -f "%Y%m%d") | true
if ]
then
print " success"
else
print "no success"
fi
But in whatever format i pass the parameter,... (3 Replies)
I have to write a script to verify input parameters;
say esr should be YES or NO other wise the script should print an error.
This is what i tried in my script but I get the following error
:
esr="YES"
if ; then
print " Error should specify esr options YES/NO"
else
esr =$esr
fi
... (2 Replies)
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I am facing a weird problem with input parameters. Please find more details about my problem below:
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Hi,
Is there a simple way to take input of parameters after the first one? As following example, if I assign others=$2, it only takes the second one, if I assign others=$@, it will include the first one. I may try to assign others="$2 $3 $4 $5 $6 $7 $8 $9", it looks very ugly and could missing... (1 Reply)
friends
and I can validate whether to run the shell has input parameters m event date, I occasionally happen something like this does not work
if $ 1 is null then
echo has entered input parameters
else
echo "parameter ok"
fi (2 Replies)
Discussion started by: tricampeon81
2 Replies
LEARN ABOUT PHP
round
ROUND(3) 1 ROUND(3)round - Rounds a floatSYNOPSIS
float round (float $val, [int $precision], [int $mode = PHP_ROUND_HALF_UP])
DESCRIPTION
Returns the rounded value of $val to specified $precision (number of digits after the decimal point). $precision can also be negative or
zero (default).
Note
PHP doesn't handle strings like "12,300.2" correctly by default. See converting from strings.
PARAMETERS
o $val
- The value to round
o $precision
- The optional number of decimal digits to round to.
o $mode
- Use one of the following constants to specify the mode in which rounding occurs.
+--------------------+---------------------------------------------------+
| Constant | |
| | |
| | Description |
| | |
+--------------------+---------------------------------------------------+
| | |
| PHP_ROUND_HALF_UP | |
| | |
| | Round $val up to $precision decimal places away |
| | from zero, when it is half way there. Making 1.5 |
| | into 2 and -1.5 into -2. |
| | |
| | |
|PHP_ROUND_HALF_DOWN | |
| | |
| | Round $val down to $precision decimal places |
| | towards zero, when it is half way there. Making |
| | 1.5 into 1 and -1.5 into -1. |
| | |
| | |
|PHP_ROUND_HALF_EVEN | |
| | |
| | Round $val to $precision decimal places towards |
| | the next even value. |
| | |
| | |
|PHP_ROUND_HALF_ODD | |
| | |
| | Round $val to $precision decimal places towards |
| | the next odd value. |
| | |
+--------------------+---------------------------------------------------+
RETURN VALUES
The rounded value
EXAMPLES
Example #1
round(3) examples
<?php
echo round(3.4); // 3
echo round(3.5); // 4
echo round(3.6); // 4
echo round(3.6, 0); // 4
echo round(1.95583, 2); // 1.96
echo round(1241757, -3); // 1242000
echo round(5.045, 2); // 5.05
echo round(5.055, 2); // 5.06
?>
Example #2
$mode examples
<?php
echo round(9.5, 0, PHP_ROUND_HALF_UP); // 10
echo round(9.5, 0, PHP_ROUND_HALF_DOWN); // 9
echo round(9.5, 0, PHP_ROUND_HALF_EVEN); // 10
echo round(9.5, 0, PHP_ROUND_HALF_ODD); // 9
echo round(8.5, 0, PHP_ROUND_HALF_UP); // 9
echo round(8.5, 0, PHP_ROUND_HALF_DOWN); // 8
echo round(8.5, 0, PHP_ROUND_HALF_EVEN); // 8
echo round(8.5, 0, PHP_ROUND_HALF_ODD); // 9
?>
Example #3
$mode with precision examples
<?php
/* Using PHP_ROUND_HALF_UP with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_UP); // 1.6
echo round( 1.54, 1, PHP_ROUND_HALF_UP); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_UP); // -1.6
echo round(-1.54, 1, PHP_ROUND_HALF_UP); // -1.5
/* Using PHP_ROUND_HALF_DOWN with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_DOWN); // 1.5
echo round( 1.54, 1, PHP_ROUND_HALF_DOWN); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_DOWN); // -1.5
echo round(-1.54, 1, PHP_ROUND_HALF_DOWN); // -1.5
/* Using PHP_ROUND_HALF_EVEN with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_EVEN); // 1.6
echo round( 1.54, 1, PHP_ROUND_HALF_EVEN); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_EVEN); // -1.6
echo round(-1.54, 1, PHP_ROUND_HALF_EVEN); // -1.5
/* Using PHP_ROUND_HALF_ODD with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_ODD); // 1.5
echo round( 1.54, 1, PHP_ROUND_HALF_ODD); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_ODD); // -1.5
echo round(-1.54, 1, PHP_ROUND_HALF_ODD); // -1.5
?>
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.0 | |
| | |
| | The $mode parameter was introduced. |
| | |
| 5.2.7 | |
| | |
| | The inner workings of round(3) was changed to |
| | conform to the C99 standard. |
| | |
+--------+---------------------------------------------------+
SEE ALSO ceil(3), floor(3), number_format(3).
PHP Documentation Group ROUND(3)